/*
 *    This program is free software; you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation; either version 2 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/*
 *    ModelPerformanceChart.java
 *    Copyright (C) 2004 University of Waikato, Hamilton, New Zealand
 *
 */

package weka.gui.beans;

import java.awt.BorderLayout;
import java.awt.GraphicsEnvironment;
import java.beans.PropertyChangeListener;
import java.beans.VetoableChangeListener;
import java.beans.beancontext.BeanContext;
import java.beans.beancontext.BeanContextChild;
import java.beans.beancontext.BeanContextChildSupport;
import java.io.Serializable;
import java.util.Enumeration;
import java.util.Vector;

import javax.swing.JFrame;
import javax.swing.JPanel;

import weka.core.Instances;
import weka.gui.visualize.PlotData2D;
import weka.gui.visualize.VisualizePanel;

/**
 * Bean that can be used for displaying threshold curves (e.g. ROC curves) and
 * scheme error plots
 * 
 * @author Mark Hall
 * @version $Revision: 9454 $
 */
public class ModelPerformanceChart extends JPanel implements
    ThresholdDataListener, VisualizableErrorListener, Visible,
    UserRequestAcceptor, Serializable, BeanContextChild {

  /** for serialization */
  private static final long serialVersionUID = -4602034200071195924L;

  protected BeanVisual m_visual;

  protected transient PlotData2D m_masterPlot;

  protected transient JFrame m_popupFrame;

  protected boolean m_framePoppedUp = false;

  /**
   * True if this bean's appearance is the design mode appearance
   */
  protected boolean m_design;

  /**
   * BeanContex that this bean might be contained within
   */
  protected transient BeanContext m_beanContext = null;

  private transient VisualizePanel m_visPanel;

  /**
   * BeanContextChild support
   */
  protected BeanContextChildSupport m_bcSupport = new BeanContextChildSupport(
      this);

  public ModelPerformanceChart() {
    java.awt.GraphicsEnvironment ge = java.awt.GraphicsEnvironment
        .getLocalGraphicsEnvironment();
    if (!ge.isHeadless()) {
      appearanceFinal();
    }
  }

  /**
   * Global info for this bean
   * 
   * @return a <code>String</code> value
   */
  public String globalInfo() {
    return Messages.getInstance().getString(
        "ModelPerformanceChart_GlobalInfo_Text");
  }

  protected void appearanceDesign() {
    removeAll();
    m_visual = new BeanVisual("ModelPerformanceChart", BeanVisual.ICON_PATH
        + "ModelPerformanceChart.gif", BeanVisual.ICON_PATH
        + "ModelPerformanceChart_animated.gif");
    setLayout(new BorderLayout());
    add(m_visual, BorderLayout.CENTER);
  }

  protected void appearanceFinal() {
    removeAll();
    setLayout(new BorderLayout());
    setUpFinal();
  }

  protected void setUpFinal() {
    if (m_visPanel == null) {
      m_visPanel = new VisualizePanel();
    }
    add(m_visPanel, BorderLayout.CENTER);
  }

  /**
   * Display a threshold curve.
   * 
   * @param e a ThresholdDataEvent
   */
  public synchronized void acceptDataSet(ThresholdDataEvent e) {
    if (!GraphicsEnvironment.isHeadless()) {
      if (m_visPanel == null) {
        m_visPanel = new VisualizePanel();
      }
      if (m_masterPlot == null) {
        m_masterPlot = e.getDataSet();
      }
      try {
        // check for compatable data sets
        if (!m_masterPlot.getPlotInstances().relationName()
            .equals(e.getDataSet().getPlotInstances().relationName())) {

          // if not equal then remove all plots and set as new master plot
          m_masterPlot = e.getDataSet();
          m_visPanel.setMasterPlot(m_masterPlot);
          m_visPanel.validate();
          m_visPanel.repaint();
        } else {
          // add as new plot
          m_visPanel.addPlot(e.getDataSet());
          m_visPanel.validate();
          m_visPanel.repaint();
        }
        m_visPanel.setXIndex(4);
        m_visPanel.setYIndex(5);
      } catch (Exception ex) {
        System.err.println(Messages.getInstance().getString(
            "ModelPerformanceChart_AcceptDataSet_Error_Text"));
        ex.printStackTrace();
      }
    }
  }

  /**
   * Display a scheme error plot.
   * 
   * @param e a VisualizableErrorEvent
   */
  public synchronized void acceptDataSet(VisualizableErrorEvent e) {
    if (!GraphicsEnvironment.isHeadless()) {
      if (m_visPanel == null) {
        m_visPanel = new VisualizePanel();
      }

      m_masterPlot = e.getDataSet();

      try {
        m_visPanel.setMasterPlot(m_masterPlot);
      } catch (Exception ex) {
        System.err.println(Messages.getInstance().getString(
            "ModelPerformanceChart_AcceptDataSet_Error_Text"));
        ex.printStackTrace();
      }
      m_visPanel.validate();
      m_visPanel.repaint();
    }
  }

  /**
   * Set the visual appearance of this bean
   * 
   * @param newVisual a <code>BeanVisual</code> value
   */
  public void setVisual(BeanVisual newVisual) {
    m_visual = newVisual;
  }

  /**
   * Return the visual appearance of this bean
   */
  public BeanVisual getVisual() {
    return m_visual;
  }

  /**
   * Use the default appearance for this bean
   */
  public void useDefaultVisual() {
    m_visual.loadIcons(BeanVisual.ICON_PATH + "DefaultDataVisualizer.gif",
        BeanVisual.ICON_PATH + "DefaultDataVisualizer_animated.gif");
  }

  /**
   * Describe <code>enumerateRequests</code> method here.
   * 
   * @return an <code>Enumeration</code> value
   */
  public Enumeration enumerateRequests() {
    Vector newVector = new Vector(0);
    if (m_masterPlot != null) {
      newVector.addElement("Show chart");
      newVector.addElement("?Clear all plots");
    }
    return newVector.elements();
  }

  /**
   * Add a property change listener to this bean
   * 
   * @param name the name of the property of interest
   * @param pcl a <code>PropertyChangeListener</code> value
   */
  
  public void addPropertyChangeListener(String name, PropertyChangeListener pcl) {
    m_bcSupport.addPropertyChangeListener(name, pcl);
  }

  /**
   * Remove a property change listener from this bean
   * 
   * @param name the name of the property of interest
   * @param pcl a <code>PropertyChangeListener</code> value
   */
  
  public void removePropertyChangeListener(String name,
      PropertyChangeListener pcl) {
    m_bcSupport.removePropertyChangeListener(name, pcl);
  }

  /**
   * Add a vetoable change listener to this bean
   * 
   * @param name the name of the property of interest
   * @param vcl a <code>VetoableChangeListener</code> value
   */
  public void addVetoableChangeListener(String name, VetoableChangeListener vcl) {
    m_bcSupport.addVetoableChangeListener(name, vcl);
  }

  /**
   * Remove a vetoable change listener from this bean
   * 
   * @param name the name of the property of interest
   * @param vcl a <code>VetoableChangeListener</code> value
   */
  public void removeVetoableChangeListener(String name,
      VetoableChangeListener vcl) {
    m_bcSupport.removeVetoableChangeListener(name, vcl);
  }

  /**
   * Set a bean context for this bean
   * 
   * @param bc a <code>BeanContext</code> value
   */
  public void setBeanContext(BeanContext bc) {
    m_beanContext = bc;
    m_design = m_beanContext.isDesignTime();
    if (m_design) {
      appearanceDesign();
    } else {
      java.awt.GraphicsEnvironment ge = java.awt.GraphicsEnvironment
          .getLocalGraphicsEnvironment();
      if (!ge.isHeadless()) {
        appearanceFinal();
      }
    }
  }

  /**
   * Return the bean context (if any) that this bean is embedded in
   * 
   * @return a <code>BeanContext</code> value
   */
  public BeanContext getBeanContext() {
    return m_beanContext;
  }

  /**
   * Describe <code>performRequest</code> method here.
   * 
   * @param request a <code>String</code> value
   * @exception IllegalArgumentException if an error occurs
   */
  public void performRequest(String request) {
    if (request.compareTo("Show chart") == 0) {
      try {
        // popup visualize panel
        if (!m_framePoppedUp) {
          m_framePoppedUp = true;

          final javax.swing.JFrame jf = new javax.swing.JFrame(Messages
              .getInstance().getString(
                  "ModelPerformanceChart_PerformRequest_Jf_JFRame_Text"));
          jf.setSize(800, 600);
          jf.getContentPane().setLayout(new BorderLayout());
          jf.getContentPane().add(m_visPanel, BorderLayout.CENTER);
          jf.addWindowListener(new java.awt.event.WindowAdapter() {
            
            public void windowClosing(java.awt.event.WindowEvent e) {
              jf.dispose();
              m_framePoppedUp = false;
            }
          });
          jf.setVisible(true);
          m_popupFrame = jf;
        } else {
          m_popupFrame.toFront();
        }
      } catch (Exception ex) {
        ex.printStackTrace();
        m_framePoppedUp = false;
      }
    } else if (request.equals("Clear all plots")) {
      m_visPanel.removeAllPlots();
      m_visPanel.validate();
      m_visPanel.repaint();
      m_visPanel = null;
      m_masterPlot = null;
    } else {
      throw new IllegalArgumentException(
          request
              + Messages
                  .getInstance()
                  .getString(
                      "ModelPerformanceChart_PerformRequest_IllegalArgumentException_Text"));
    }
  }

  public static void main(String[] args) {
    try {
      if (args.length != 1) {
        System.err.println(Messages.getInstance().getString(
            "ModelPerformanceChart_Main_Error_Text"));
        System.exit(1);
      }
      java.io.Reader r = new java.io.BufferedReader(new java.io.FileReader(
          args[0]));
      Instances inst = new Instances(r);
      final javax.swing.JFrame jf = new javax.swing.JFrame();
      jf.getContentPane().setLayout(new java.awt.BorderLayout());
      final ModelPerformanceChart as = new ModelPerformanceChart();
      PlotData2D pd = new PlotData2D(inst);
      pd.setPlotName(inst.relationName());
      ThresholdDataEvent roc = new ThresholdDataEvent(as, pd);
      as.acceptDataSet(roc);

      jf.getContentPane().add(as, java.awt.BorderLayout.CENTER);
      jf.addWindowListener(new java.awt.event.WindowAdapter() {
        
        public void windowClosing(java.awt.event.WindowEvent e) {
          jf.dispose();
          System.exit(0);
        }
      });
      jf.setSize(800, 600);
      jf.setVisible(true);
    } catch (Exception ex) {
      ex.printStackTrace();
      System.err.println(ex.getMessage());
    }
  }
}
